Thanks for your reply. I used this URL
https://developer.yammer.com/docs/messages-json-post
and tried to add the specific yammer community at the end but that format is not correct.
What about through API? would be possible to communicate both apps? Make a GET request on Discourse (to catch new topics) and then make a POST request to the yammer community.
Thats all I can think of being a total newbie on the matter.
edit: I’m also trying to create a new provider on the Chatroom integration plugin following this steps but not sure if I would be capable of that.